convert 01/01/0001 to empty string

[Tan]

I am using ObjectDataSource bind to DetailView which will contain one of the
column with the value type is date. whenver the value of this column is
empty . then it will be display the date in the format ( 01/01/0001), How
can I convert it to empty string or just string?



Thank you very much

tan

 

[Islamegy®]

DateTime type Don't Allow null or empty string.. the only way i found to
workaround this is to convert it to string and check if it's 01/01/0001..
I did myDatetime Class to do this for me when i use ToString() ,
ToShortDateString(),etc...

 

[Sebastian Wojciechowski]

create class, inherit from DateTime and overload ToString() method

 

[Juan T. Llibre]

Maybe 01/01/0001 is a default value assigned in the table ?

Check the table's design and see if it is a default value.
If it is a default value, change the default value to null or empty.

 

[Tan]

I can not inherit from DateTime, in .net 2.0 is a sealed class, any
suggestions?
Tan

 

[Otis Mukinfus]

If you are using .NET 2.0 you can use System.Nullable<T>

Look up System.Nullable in the help file.

I can not inherit from DateTime, in .net 2.0 is a sealed class, any
suggestions?
Tan

Otis

 

[Juan T. Llibre]

Isn't it simpler to assume that "01/01/0001" is a default value in the
table in question, and that changing that default value to <null>
would simplify the checking/text assignment task ?

Then, checking for IsDBNull / System.DbNull is simple, or use the faster :

bool isNull = (dr[ordinal]==System.DBNull.Value);